Hypothetical situation, lets say you have a purpose built 302 blower motor(matching heads, cam, intake, etc.) and a 393 stroker (matching heads, cam, intake, etc.) with no blower. Both will use a factory Ford mass air efi setup. Basically, I am comparing boost vs cubes. Assuming both of these motors are built to put up similar power numbers, which in your opinions would get the best fuel economy and be the most reliable.